@article{TheiselWeinkaufHegeetal.2005, author = {Holger Theisel and Tino Weinkauf and Hans-Christian Hege and Hans-Peter Seidel}, title = {Topological methods for 2D time-dependent vector fields based on stream lines and path lines}, journal = {IEEE Transactions on Visualization and Computer Graphics}, volume = {11}, number = {4}, doi = {10.1109/TVCG.2005.68}, year = {2005}, }